CN201298685Y - Busbar system of drawer-type circuit breaker - Google Patents
Busbar system of drawer-type circuit breaker Download PDFInfo
- Publication number
- CN201298685Y CN201298685Y CNU2008201609939U CN200820160993U CN201298685Y CN 201298685 Y CN201298685 Y CN 201298685Y CN U2008201609939 U CNU2008201609939 U CN U2008201609939U CN 200820160993 U CN200820160993 U CN 200820160993U CN 201298685 Y CN201298685 Y CN 201298685Y
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- CN
- China
- Prior art keywords
- busbar
- contact
- pedestal
- bearing
- circuit breaker
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a busbar system of a drawer-type circuit breaker which comprises a connection device and an isolation device mounted on a base. The connection device comprises bridge-shaped contacts, frame plates and a busbar; each bridge-shaped contact comprises more than ten contact pieces which are in superposition and each with a thickness of 1.5 to 2.5mm; flaky springs mounted at the upper end surface and the lower end surface of each contact piece, and brackets are spliced with the flaky springs; the busbar connected to the base is inserted into the bridge-shaped contacts and is in contact with all contact pieces; a bulge at the end part of the busbar is connected with all contact pieces; the frame plates inserted in contact pieces are connected with the busbar; two insulation boards of the isolation device are mounted on one side of the base; windows are formed on the insulation boards respectively corresponding to the bridge -shaped contacts; a push rod is mounted on the base through a support saddle, a spring is mounted on the push rod and the support saddle, and two inclined wedging blocks with opposite direction are respectively propped against the insulation boards, so as to form independent units. The utility model has the advantages of material conservation, reliable action, safe isolation and high commonality, and is beneficial for miniaturized design.
Description
Technical field
The utility model relates to a kind of drawer type circuit breaker bus system, belongs to the withdrawable circuit breaker technical field.
Background technology
Withdrawable circuit breaker has circuit breaker and isolates the dual-use function of electrical equipment.Withdrawable circuit breaker is made up of breaker body and two relatively independent parts of drawout chassis.The busbar system of circuit breaker is positioned at the rear portion of drawout chassis, plays the contact effect between breaker body and the drawout chassis.Its major function is when breaker body is in the separation point position, and main circuit is disconnected; And when breaker body was in link position, main circuit was connected.Present disclosed busbar system is made up of the jockey and the spacer assembly that are installed on the pedestal usually.
The pedestal of common three utmost points and four-pole circuit breaker is an overall structure, because span is big, for guaranteeing its intensity, volume is bigger, moreover by two pairs of mould manufacturings, consumptive material is many respectively for the pedestal of three utmost points and four utmost points, and the manufacturing cost height is unfavorable for miniaturization Design.
Jockey mainly is made of bridge-shaped contact, bearing and busbar, and jockey is by into and out of line busbar being connected into and out of line busbar and drawout chassis of the silver-plated bridge-shaped contact of fine copper with breaker body.By Electric contact theory as can be known, the contact position of conductor and conductor is the major obstacle that electric energy transmits, and the contact position when electric current is flow through in two conductor contact positions, produces localized hyperthermia owing to there is contact resistance, and conduction towards periphery.Metal material in the electrical equipment and nonmetallic materials are after temperature surpasses certain limit, and its mechanical strength and dielectric strength can obviously descend, and influence useful life, even damage.Therefore national Specification the maximum temperature-rise of electric equipment products, with regard to low-voltage circuit breaker, drawout chassis into and out of the line busbar be the temperature rise of binding post be must examination the basic mechanical design feature index, and the quality of jockey is the key factor that influences temperature rise.
At present, the common jockey of low-voltage circuit breaker roughly has two kinds: a kind of structure is to be one to be assembled on the support with each two bridge-shaped contact up and down, middlely compresses with extension spring, after busbar riveted joint gusset is loaded onto bridge-shaped contact, is loaded on the whole pedestal.Its weak point is that bridge-shaped contact belly fluting is used for mounting spring, increases and consumptive material the bridge-shaped contact volume, and has reduced the effective-current cross section.Owing to the riveted joint of gusset and busbar takies busbar one segment length, make busbar longer, the cost height in addition.In addition, this bridge-shaped contact adopts thickness to form greater than the contact of 5mm is stacked, because contact is processed into by cold punching, contact contacts with busbar inclined-plane face, the effective contact area of actual minimizing, and its temperature rise is also undesirable.Another kind of structure adopts the non-ferrous metal support, and symmetry is installed up and down, compression spring compression bridge-shaped contact.Though the contact of bridge-shaped contact is shorter and thin than first kind of structure, help increasing contact area and economize material, but because the compression spring has tied up a part of space, the quantity of contact is restricted, instructions for use can not be satisfied in the current-carrying cross section, because temperature rise is too high, the situation of damage circuit breaker happens occasionally in actual motion.
Spacer assembly adopts the connecting rod linkage structure basically, this spacer assembly mainly is made of driving shaft, drive link, dividing plate connecting rod, drawout chassis side plate, limit guide rail, back-moving spring, burst disk supporter and burst disk, when driving shaft compressing drive link when advancing, drive link drives the dividing plate connecting rod, drive link drives the burst disk supporter again and moves up and down in limit guide rail, opens burst disk.But the kind complex structure, especially burst disk is an overall structure, because clamping stagnation takes place span Da Yi, functional reliability is poor, has certain potential safety hazard.
Summary of the invention
The purpose of this utility model provides and a kind ofly can form separate unit, and material-saving, temperature rise are low, and reliable in action, isolation safe, highly versatile help the busbar system of the withdrawable circuit breaker of miniaturization Design.
The utility model is that the technical scheme that achieves the above object is: a kind of drawer type circuit breaker bus system, comprise pedestal and the jockey and the spacer assembly that are installed on the pedestal, it is characterized in that: described pedestal is connected and composed by two pedestals, and pedestal one side has guide groove; Described jockey comprises two groups of bridge-shaped contacts, frame plate and busbar, bridge-shaped contact by more than 10 and thickness at the contact of 1.5～2.5mm closed assembly, be installed on the contact, the springs of following both ends of the surface and be connected to being configured on two springs, the busbar of each contact touches the face middle part the frame plate groove, sidepiece is fluted, busbar is connected on the pedestal by securing member, busbar is inserted in two bridge-shaped contacts busbar with each contact respectively and touches face and join, the projection of busbar end is arranged in the groove of each contact, and the interior securing member of also using of frame plate groove that frame plate is inserted into each contact is connected with busbar; Described spacer assembly comprises insulation board, push rod, bearing and spring, two insulation boards are installed in the guide groove of pedestal and can move up and down, the corresponding respectively bridge-shaped contact separately of two insulation boards is opened a window, bearing is installed on the pedestal, the push rod that can move along bearing is housed on the bearing, spring is installed on push rod and the bearing, and the tapered wedges that two directions are opposite on the push rod withstands on respectively on separately the insulation board.
The utility model adopts the advantage after the technique scheme to be: 1, temperature rise is low.Contact in the utility model bridge-shaped contact is the flake structure of thickness at 1.5～2.5mm, making each contact and busbar is that line contacts, therefore the contact after the stack is under condition of equivalent thickness, increased the contact area of contact and busbar effectively, and satisfied the energy instructions for use of current-carrying cross section again, so temperature rise is low, the data after test show, its temperature rise is compared with the version of existing market main product and has been reduced by 18%, and temperature rise is better than standard.2, material-saving, can reduce production costs.Compare the effective-current cross section increases and copper material saving 36% with market same specification main product, can reduce production costs significantly, and has saved social resources.3, highly versatile.The utility model constitutes an independently unit by pedestal and the jockey and the spacer assembly that are installed on the pedestal, so only needing extremely to increase a separate unit again on the basis three, four-pole circuit breaker gets final product, circuit breaker volume behind employing the utility model circuit breaker bus heat-extraction system is compared with the mainstream product in the market and is dwindled 32%, helps miniaturization Design.4, reliable in action, safe isolation is good.The utility model adopts insulation board, push rod, bearing and spring as spacer assembly, compact conformation, can be by two directions on the push rod opposite tapered wedges withstand on respectively on separately the insulation board, insulation board is moved up and down, opening window makes the body busbar can insert in the bridge-shaped contact, solved stagnant card phenomenon, reliable in action, safe isolation is good.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is the utility model drawer type circuit breaker bus system structural representation.
Fig. 2 is the perspective view after the utility model drawer type circuit breaker bus system is removed a pedestal.
Fig. 3 is that the utility model jockey is installed in the perspective view on the pedestal.
Fig. 4 is a bridge shape contact structural representation of the present utility model.
Fig. 5 is a springs structural representation of the present utility model.
Fig. 6 is that the utility model spacer assembly is installed in the perspective view on the pedestal.
Wherein: 1-pedestal, 1-1-guide groove, 1-2-positioning table, 1-3-installing hole, 1-4-bearing groove, 1-5-rectangular channel, 2-insulation board, 2-1-window, 3-push rod, 3-1-tapered wedges, 4-bridge-shaped contact, 4-1-contact, 4-11-projection, 4-12-frame plate groove, 4-13-groove, 4-14-step surface, 4-2-support, 4-3-springs, 4-31-bayonet socket, 5-frame plate, 6-securing member, 7-busbar, 7-1-projection, 7-2-breach, 8-bearing, 8-1-rectangular preiection, 9-spring, 10-securing member.
Embodiment
See shown in Fig. 1～5 that drawer type circuit breaker bus system of the present utility model comprises pedestal and is installed in jockey on the pedestal and separate unit that spacer assembly constitutes.See shown in Fig. 1,2,3,5, pedestal of the present utility model is made of two pedestals that connect, symmetry and be fastened and connected and form, or asymmetric connecting and composing, two pedestals 1 connect by securing member 10, and pedestal 1 one sides have guide groove 1-1, in order to two insulation boards 2 to be installed, there is bearing groove 1-4 at the middle part of pedestal 1 opposite side, and there are location notch or positioning table 1-2 in this bearing groove 1-4 both sides, are used to install busbar 7.
See shown in Fig. 1,2, jockey of the present utility model comprises two groups of bridge-shaped contacts 4, frame plate 5 and busbar 7, bridge-shaped contact 4 by more than 10 and thickness constitute at the contact 4-1 of 1.5～2.5mm closed assembly and springs 4-3 and support 4-2, the upper/lower terminal face of contact 4-1 is equipped with two springs 4-3, and each contact 4-1 that springs 4-3 is housed is installed in the rectangle frame of support 4-2.See shown in Figure 4, the busbar of this contact 4-1 touches the face middle part frame plate groove 4-12, the fluted 4-13 of sidepiece, see shown in Figure 5, this springs 4-3 is provided with notch, and the both sides of springs 4-3 are provided with bayonet socket 4-31, be used to install each contact 4-1, see shown in Figure 4, the thickness of this contact 4-1 also can be at 1.5～2.0mm, the busbar of contact touches face and the contact two sides are the transition cambered surface, this cambered surface radius is at 4～5mm, and be in reverse to the contact 4-1 another side that busbar touches face is centrosymmetric step surface 4-14, step surface 4-14 is used to install springs 4-3, and the middle table top A of this step surface 4-14 and the angle β of horizontal plane are at 5 °～15 °, and length is at 36～50mm, the structure of this contact 4-1 not only helps increasing contact-making surface reduces temperature rise, and be easy to processing, contact 4-1 is provided with protruding 4-11 in the side of frame plate groove 4-12, carries out spacing to the body busbar.See shown in Figure 1, two busbars 7 of the utility model jockey are installed in the opposite side of pedestal 1 respectively, see shown in Figure 3, opposite side is provided with positioning table 1-2 on the pedestal 1, the corresponding positioning table 1-2 that is provided with on breach 7-2 and the pedestal 1 matches on the busbar 7, notch and busbar 7 profiles that positioning table 1-2 on two pedestals 1 that fasten forms are complementary, securing member 10 passes the installing hole 1-3 on the pedestal 1, two busbars 7 are connected on the pedestal 1, or two busbar 7 be bearing in respectively in two location notchs of pedestal 1, notch and busbar 7 profiles that the location notch on two pedestals 1 that fasten forms are complementary.See shown in Fig. 1,2, two busbars 7 in the utility model pedestal 1 are inserted into respectively between two bridge-shaped contacts 4, making the busbar of busbar 7 and each contact 4-1 touch face joins, and the projection 7-1 of busbar 7 ends is arranged in the groove 4-13 of two bridge-shaped contacts, 4 each contact 4-1, frame plate 5 is inserted in the frame plate groove 4-12 of two bridge-shaped contacts, 4 each contact 4-1, and securing member 6 is connected busbar 7 with frame plate 5, can reduce busbar 7 sizes, save copper material, reduced production cost.
See Fig. 1,2, shown in 6, spacer assembly of the present utility model comprises insulation board 2, push rod 3, bearing 8 and spring 9, two insulation boards 2 are installed in the guide groove 1-1 of pedestal 1, two insulation boards 2 can move up and down, corresponding respectively two bridge-shaped contacts of two insulation boards 2 are respectively opened a window 2-1, bearing 8 is bearing in the bearing groove 1-4 of pedestal 1, this bearing groove 1-4 can be arc groove, or employing polygon groove, see shown in Figure 6, the inboard of this bearing groove 1-4 is provided with rectangular channel 1-5, and bearing 8 also is provided with corresponding rectangular preiection 8-1, rectangular preiection 8-1 on the bearing 8 is arranged in this rectangular channel 1-5, and bearing support 8, bearing 8 are provided with guide groove or lead muscle, push rod 3 is installed in the guide groove of bearing 8 or leads on the muscle and can move along bearing 8, spring 9 is installed on push rod 3 and the bearing 8, and the tapered wedges 3-1 that two directions are opposite on the push rod 3 withstands on respectively on separately the insulation board 2, and the insulation board 2 that can promote separately moves up and down.
When body is pushed ahead by the head motion of drawout chassis, body heads on push rod 3 and moves forward, promotion two insulation boards 2 of push rod 3 tapered wedges 3-1 move respectively up and down, window 2-1 on two insulation boards 2 opens, the body busbar passes the opposite side that this window 2-1 inserts bridge-shaped contact 4, peg graft with each the contact 4-1 on two bridge-shaped contacts 4, when the body busbar contacted with the protruding 4-11 of bridge-shaped contact 4, breaker body was finished with drawout chassis and is connected.When body was withdrawed from by the head motion of drawout chassis, push rod 3 resetted with body under the effect of spring 9, and insulation board window closure is isolated body and jockey safety.
Claims (7)
1, a kind of drawer type circuit breaker bus system comprises pedestal and the jockey and the spacer assembly that are installed on the pedestal, and it is characterized in that: described pedestal is connected and composed by two pedestals, and pedestal one side has guide groove; Described jockey comprises two groups of bridge-shaped contacts, frame plate and busbar, bridge-shaped contact by more than 10 and thickness at the contact of 1.5～2.5mm closed assembly, be installed on the contact, the springs of following both ends of the surface and be connected to being configured on two springs, the busbar of each contact touches the face middle part the frame plate groove, sidepiece is fluted, busbar is connected on the pedestal by securing member, busbar is inserted in two bridge-shaped contacts busbar with each contact respectively and touches face and join, the projection of busbar end is arranged in the groove of each contact, and the interior securing member of also using of frame plate groove that frame plate is inserted into each contact is connected with busbar; Described spacer assembly comprises insulation board, push rod, bearing and spring, two insulation boards are installed in the guide groove of pedestal and can move up and down, the corresponding respectively bridge-shaped contact separately of two insulation boards is opened a window, bearing is installed on the pedestal, the push rod that can move along bearing is housed on the bearing, spring is installed on push rod and the bearing, and the tapered wedges that two directions are opposite on the push rod withstands on respectively on separately the insulation board.
2, drawer type circuit breaker bus system according to claim 1, it is characterized in that: the thickness of described contact is at 1.5～2.0mm, the busbar of contact touches face and the contact two sides are the transition cambered surface, this cambered surface radius is at 4～5mm, being in reverse to the contact another side that busbar touches face is centrosymmetric step surface, the middle table top A that joins with springs and the angle β of horizontal plane are at 5 °～15 °, and length is at 36～50mm, and contact is provided with projection in a side of frame plate groove.
3, drawer type circuit breaker bus system according to claim 1 is characterized in that: the both sides of described springs are provided with bayonet socket.
4, drawer type circuit breaker bus system according to claim 1 is characterized in that: described pedestal is made of two pedestals of symmetry and fastening.
5, drawer type circuit breaker bus system according to claim 1, it is characterized in that: the middle part of described pedestal opposite side has bearing groove, bearing groove both sides that location notch or positioning table are arranged, be bearing in the pedestal location notch or positioning table on busbar be connected on the pedestal by securing member, bearing support is in the bearing groove of pedestal.
6, drawer type circuit breaker bus system according to claim 5 is characterized in that: the bearing groove of described pedestal is an arc groove, and the inboard of arc groove is provided with rectangular channel, and bearing is provided with rectangular preiection and is arranged in this rectangular channel.
7, drawer type circuit breaker bus system according to claim 5 is characterized in that: the both sides of described busbar are provided with breach, and indentation, there is provided with screw, and the breach of busbar is arranged on the positioning table of pedestal, and bolt passes in the screw that pedestal is screwed in busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201609939U CN201298685Y (en) | 2008-11-05 | 2008-11-05 | Busbar system of drawer-type circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201609939U CN201298685Y (en) | 2008-11-05 | 2008-11-05 | Busbar system of drawer-type circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201298685Y true CN201298685Y (en) | 2009-08-26 |
Family
ID=41044671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201609939U Expired - Lifetime CN201298685Y (en) | 2008-11-05 | 2008-11-05 | Busbar system of drawer-type circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201298685Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339690A (en) * | 2010-07-15 | 2012-02-01 | 北京人民电器厂有限公司 | High-insulativity circuit breaker |
| CN102637537A (en) * | 2012-04-19 | 2012-08-15 | 贵州长征开关制造有限公司 | Bridge contact for drawout switching devices |
| CN104332873A (en) * | 2014-11-03 | 2015-02-04 | 无锡韩光电器股份有限公司 | Drawer holder of automatic transfer switch equipment |
| CN106710976A (en) * | 2015-11-12 | 2017-05-24 | 上海良信电器股份有限公司 | Drawer type circuit breaker busbar electrical connection structure |
| EP3627640A4 (en) * | 2017-05-16 | 2020-03-25 | Mitsubishi Electric Corporation | Drawer-type circuit breaker |
| CN111448728A (en) * | 2017-12-14 | 2020-07-24 | 三菱电机株式会社 | Pull-out type circuit breaker |
-
2008
- 2008-11-05 CN CNU2008201609939U patent/CN201298685Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102339690A (en) * | 2010-07-15 | 2012-02-01 | 北京人民电器厂有限公司 | High-insulativity circuit breaker |
| CN102339690B (en) * | 2010-07-15 | 2015-06-17 | 北京人民电器厂有限公司 | High-insulativity circuit breaker |
| CN102637537A (en) * | 2012-04-19 | 2012-08-15 | 贵州长征开关制造有限公司 | Bridge contact for drawout switching devices |
| CN102637537B (en) * | 2012-04-19 | 2015-06-03 | 贵州长征开关制造有限公司 | Bridge contact for drawout switching devices |
| CN104332873A (en) * | 2014-11-03 | 2015-02-04 | 无锡韩光电器股份有限公司 | Drawer holder of automatic transfer switch equipment |
| CN104332873B (en) * | 2014-11-03 | 2017-02-15 | 无锡韩光电器股份有限公司 | Drawer holder of automatic transfer switch equipment |
| CN106710976A (en) * | 2015-11-12 | 2017-05-24 | 上海良信电器股份有限公司 | Drawer type circuit breaker busbar electrical connection structure |
| EP3627640A4 (en) * | 2017-05-16 | 2020-03-25 | Mitsubishi Electric Corporation | Drawer-type circuit breaker |
| CN111448728A (en) * | 2017-12-14 | 2020-07-24 | 三菱电机株式会社 | Pull-out type circuit breaker |
| EP3726676A4 (en) * | 2017-12-14 | 2020-12-09 | Mitsubishi Electric Corporation | Drawer type breaker |
| CN111448728B (en) * | 2017-12-14 | 2022-03-18 | 三菱电机株式会社 | Pull-out type circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090826 Effective date of abandoning: 20081105 |